// sprite index
#define WALL_UNIT 0
#define GREEN_ARROW 1
#define RED_ARROW 2
#define DARK_BUTTON 3
#define LIGHT_BUTTON 4
#define BUTTON_OK 5
#define BUTTON_BACK 6
#define INGAME_LEVEL_BOX 7

// menu info
#define MENU_HEIGHT 31
#define MENU_WIDTH 183
#define ARROW_HEIGHT 29